cp/ChangeLog
2011-04-29  Le-Chun Wu  <lcwu@google.com>

	* cp-tree.h (LOOKUP_EXPLICIT_TMPL_ARGS): Define.
	* call.c (build_new_function_call): Set it for TEMPLATE_ID_EXPRs.
	(build_over_call): Use it to determine whether to emit a NULL
	warning for template function instantiations.
	(build_new_method_call): Set LOOKUP_EXPLICIT_TMPL_ARGS if
	EXPLICIT_TARGS is set.

2011-04-29  Diego Novillo  <dnovillo@google.com>
	    Le-Chun Wu  <lcwu@google.com>

	* call.c (conversion_null_warnings): Also handle assignments
	when warning about NULL conversions.

testsuite/ChangeLog
2011-04-29  Le-Chun Wu  <lcwu@google.com>

	* g++.dg/warn/Wnull-conversion-1.C: New.
	* g++.dg/warn/Wnull-conversion-2.C: New.

2011-04-29  Le-Chun Wu  <lcwu@google.com>

	* g++.dg/warn/Wconversion-null-2.C: Do not expect a NULL
	  warning in implicitly instantiated templates.

2011-04-29  Diego Novillo  <dnovillo@google.com>

	* g++.old-deja/g++.other/null3.C: Expect warning about converting
	boolean to a pointer.

From-SVN: r173217